Moofie- I'm sorry, I am not really sure what your question is. The problems "in general" are exactly what's stated. They are on the shelves in petstores and cigarettes are on the shelves in convinece stores, but that too is not good for you. Same analogy. Some people will smoke and never get cancer, some dogs will eat them and be ok. It's a risk.
The important thing is if you do allow your dog to eat them, they need to be supervised.
Greyhoundluv- your vet and mine say exactly the same thing.
I have from time to time given my dogs the CET treated chews but as soon as they get soft, they are garbage. I exchange it for a cookie so I am forgiven!